Elottr-sieteb



C. H. ROBERSON.

FLOUR SIFTER.

APPLICATION HLED APR.2,|919.

1,330,722. Patented Feb.10,1920.

3 wuem hmo ES PATENT @FFTCE.

CELESTE H. RUBERSON, OF CLAEKSDALE, MISSISSIPPI.

FLOUR-SIFTER.

Application. filed April 2, 1919.

To all whom it may concern:

Be it known that l, Cnrnsrn H. Ronnnson, a citizen of the United States,residing at Clarksdale, in the county of Coahoma and State ofMississippi, have invented certain new and useful improvements in Flour-Sifters; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to that class of sifters which is generallyemployed in household use for sifting flour and similar material. andhas for its object to provide a sifter equipped with series of removableand interchangeable sifting screens to facilitate separation of theflour.

With this and other objects in view, the invention consists in the novelconstruction, combination and arrangement of parts as will behereinafter specifically described, claimed and illustrated in theaccompany incr drawing, in which:

*igure 1 represents a perspective view of the flour sifter.

Fig. 2 represents a vertical sectional view therethrough.

Fig. 3 represents a horizontal sectional view on the line 3-3 of Fig. 2,and

Fig. 4 is a section on the line 4i of Fig. 3.

Referring to the drawing in retail wherein similar reference numeralsdesignate corresponding parts throughout the several views, the numeral5 indicates the hollow cylindrical body or casing of the sifter havincopen ends and provided with an internal si ting screen 6 arranged belowthe agitator 7 carried by the vertical shaft 8. A handle 9 consisting ofa vertical grip 10 and horizontal arms 11, is pivoted to the body 5through the medium of rivets 12. The rivets 12 pass through the arms 11and through brackets 13 which latter are secured to the body 5 adjacentopenings 1 1 in the body. The

. arms 11 extend into the body 5 through the openings 14c and the shaft8 is secured to and carried by the inner ends thereof.

The body 5 at a point below the screen 6 is forn' ed with acircumferential slot 15 constituting an entrance opening of ade quatewidth to accommodate the auxiliary sifting screens to be hereinaftermore fully described.

The portion of the hollow body 5 lying in Specification of LettersPatent.

Patented Feb. 10, 1920.

Serial 1510. 286,893.

the horizontal plane of the opening 15 is struck outwardly to provide asubstantially semi-circular holder 16 for the auxiliary screens andspaced flanges 17 are secured to or formed integral with the holder 16and extend throughout the entire length of the latter.

The holder 16 is provided with as many supporting flanges 17 as desiredand each is adapted to support auxiliary screens 18 each of which issecured in a frame 19 preferably constructed of metal or similarmaterial of adequate strength and rigidity to retain the screen 18 inproper position and prevent it from sagging. An agitator 18 secured tothe shaft 8 above each auxiliary screen. 18. The frame 19 of eachauxiliary screen 18 is provided with a recess 19 for the reception ofthe shaft 8. The engage ment between the Walls of the recesses 19 andthe shaft 8 hold the screens 18 against rotary movement during theoperation of the sifter.

in order to prevent the flour or other material being sifted fromescaping through the opening 15, a substantially semi-cylindrical door20 having extended ends is hinged at one end as indicated at 21 to oneterminal of the holder 16, and when the door is swung inwardly itcompletely covers the opening 15. A spring latch or holder 22 is carriedby the free end of the door and is provided with a lug 23 adapted toengage in the recess 2% formed in one end of the holder 16 to secure thedoor in closed position and prevent it from accidentally swinging open.

In use, the auxiliary screens 18 may be removed, if preferred, and thematerial may be sifted through the main screen 6 only, whereas if it isdesired to further sift or separate the material, one or more of theauxiliary screens 18 is placed in the holder 16 and by vibratorymovement of the body 5 on the handle 9 the material is successivelysifted through the several auxiliary screens.

ld hat T claim is 1. A sifter including a hollow body open at its upperend and provided with an opening in its side wall, a plurality ofagitators movably mounted in the body in relatively spaced relation, anda screen located in the body below each agitator and removable throughsaid side opening independently of each other and the agitators.

A sifter including a hollow body open at its upper end and provided withan opening in its side wall, a plurality of agitators said sideopening,'a11d an operating element connected to said agitators.

3. A sitter including a hollow body open at its upper end and providedwith an opening inits side wall, a plurality of horizontally disposedagitators movably mounted in the body in Vertically spaced relation, ascreen fixed within the body below one of said agitators, and a'screenlocated in the body below each of said other agitators and removablethrough' said side opening independently of each other and said otheragitators.

A sitter including a hollow body open at its upper and lower ends andprovided with an opening in its side wall :I(l].l(30l1t its lower end, aplurality of horizontally disposed agitators inovably mounted in thebody in vertically spaced relation a screen fixed within the body belowone of said agitators, a screen located in the body below each of saidother agitators and removable through said side openings independentlyof each other and said other agitators, a closure for said sideopenings, and an operating element connected to said agitators.

In testimony whereof I al'liX my signature.

CELESTE H. ROBERSON.

